Live Chat Widgets Cost 9.5 Points of Good LCP

    Sites running a live-chat widget pass Core Web Vitals on 37.6% of mobile origins versus 43.3% without, and loading takes the biggest hit, with good-LCP dropping nearly 10 points.

    Core Web Vitals pass rate, with and without live chat (mobile)
    Without live chat
    43.3%
    With live chat
    37.6%

    Source: PageSpeed Matters analysis of 9.5 million origins with CrUX field data, mobile 75th percentile, mid-2026.

    A 5.7-point gap in overall pass, and nearly all of it traces back to how the widget loads.

    Good loading versus good responsiveness, with and without live chat (mobile)
    Good LCP with live chat
    60.5%
    Good LCP without
    70%
    Good INP with live chat
    83.6%
    Good INP without
    85%

    Source: PageSpeed Matters, mobile 75th-percentile field data, mid-2026.

    LCP takes a 9.5-point hit while INP barely moves. This is a loading problem, and loading problems are the most fixable kind.

    Source: Live Chat Widgets Cost 9.5 Points of Good LCP - PageSpeed Matters